What is wrong then the car jumps or feels as though it is skipping gears? on 2005 Pontiac Grand Prix

There are not any codes.

by in Manitowoc, WI on March 08, 2013
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2 answers
ANSWER by , March 08, 2013
Engine misfire, need a tune up!
ANSWER by , March 09, 2014
From the frequently reports problems page: 20 reports of Erratic Shifting of the Automatic Transmission Verified The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.